Course - docker for beginners 

https://kodekloud.com/p/docker-for-the-absolute-beginner-hands-on

Course - on docker swarm

https://kodekloud.com/p/docker-swarm-services-stacks-hands-on

Ppt on docker for beginners 

https://docs.google.com/presentation/d/1BbwMpYkVpSJi67MdBr_WR_MjlrtT5_lfnWjX1gkxFLc/edit?usp=sharing

# Docker Basic commands 

Run - start a container 

$ docker run nginx

ps - list containers

$ docker ps 
$ docker ps -a

Stop - stop a container

$ docker stop image_name

Rm - remove a containers

$ docker rm container

Images - list images

$ docker images

rmi - Remove Images 

$ docker rmi images

Pull - Download an image

$ docker pull nginx

Append a command 

$ docker run ubuntu sleep 5

Exec - Execute a command

$ docker exec distracted_mcclintock cat /etc/hosts 

Run - attach and detach

$ docker run –d kodekloud/simple-webapp

Run - tag

$ docker run redis
$ docker run redis:4.0

Run - STDIN

$ docker run –it kodekloud/simple-prompt-docker

Run - PORT mapping

$ docker run –p 80:5000 kodekloud/simple-webapp
$ docker run -p 8306:3306 mysql

Run - Volume mapping

$  docker run –v /opt/datadir:/var/lib/mysql mysql

Inspect container

$ docker inspect ubuntu

Container logs

$ docker logs redis

ENV Variable in docker

$ docker run -e APP_COLOR=blue simple-webapp-color

Inspect environment variable

$ docker inspect blissful_hopper

Docker build 

$ docker build .